File: refs.rs

package info (click to toggle)
rustc 1.90.0%2Bdfsg1-1~bpo13%2B2
  • links: PTS, VCS
  • area: main
  • in suites: trixie-backports
  • size: 925,944 kB
  • sloc: xml: 158,148; javascript: 19,781; sh: 19,174; python: 15,732; ansic: 13,096; cpp: 7,181; asm: 4,376; makefile: 697; lisp: 176; sql: 15
file content (21 lines) | stat: -rw-r--r-- 673 bytes parent folder | download | duplicates (17)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
//@ compile-flags: -C no-prepopulate-passes -Zmir-opt-level=0 -Copt-level=0

#![crate_type = "lib"]

// Hack to get the correct size for the length part in slices
// CHECK: @helper([[USIZE:i[0-9]+]] %_1)
#[no_mangle]
pub fn helper(_: usize) {}

// CHECK-LABEL: @ref_dst
#[no_mangle]
pub fn ref_dst(s: &[u8]) {
    // We used to generate an extra alloca and memcpy to ref the dst, so check that we copy
    // directly to the alloca for "x"
    // CHECK: store ptr %s.0, {{.*}} %x
    // CHECK: [[X1:%[0-9]+]] = getelementptr inbounds i8, {{.*}} %x, {{i32 4|i64 8}}
    // CHECK: store [[USIZE]] %s.1, {{.*}} [[X1]]

    let x = &*s;
    &x; // keep variable in an alloca
}